Patents by Inventor Yangsheng Chen
Yangsheng Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12458803Abstract: Disclosed herein are devices and methods used with neurostimulation therapy for spinal cord injury. More particularly, embodiments of the present invention relate to a sync pulse detector and methods for synchronizing signals from an implanted neurostimulator with measured physiological responses and other data.Type: GrantFiled: February 11, 2022Date of Patent: November 4, 2025Assignee: University of Louisville Research Foundation, Inc.Inventors: Susan J. Harkema, Yangsheng Chen, Douglas J. Jackson, Manikandan Ravi, Claudia Angeli
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Publication number: 20230414290Abstract: Methods for optimization of surgical placement of an implantable electrode for spinal cord epidural stimulation of a subject include creating a computational model of the subject spinal cord based on medical imagery, determining the position of the lumbosacral enlargement, and determining an optimal placement to maximize volumetric coverage of the lumbosacral enlargement by the implantable electrode.Type: ApplicationFiled: November 22, 2021Publication date: December 28, 2023Applicant: University of Louisville Research Foundation, Inc.Inventors: Susan J. Harkema, Samineh Mesbah, Maxwell Boakye, Claudia Angeli, Yangsheng Chen
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Patent number: 11813446Abstract: The present invention relates to methods for improvement in lower urinary tract function in an individual with neurogenic urological dysfunction through epidural stimulation of the spinal cord. In certain embodiments, the methods comprise applying a pattern of epidural electrical stimulation to the spinal cord of an individual with impaired lower urinary tract under stimulation parameters sufficient to improve the storage of fluid in the bladder, sensations of fullness and/or emptying, detrusor over-activity, high detrusor pressure, voiding the bladder, transitioning from a storage state to a voiding state, and decreasing detrusor-external urethral sphincter dyssynergia. In certain embodiments, additional patterns of epidural electrical stimulation may be applied simultaneously, such as to maintain a normotensive cardiovascular state of the individual.Type: GrantFiled: April 4, 2020Date of Patent: November 14, 2023Assignee: University of Louisville Research Foundation, Inc.Inventors: Charles S. Hubscher, Susan J. Harkema, April N. Herrity, Yangsheng Chen, Claudia Angeli
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Patent number: 11691016Abstract: Patients with spinal cord injuries have benefited from neurostimulation therapy comprising delivery of electrical stimulation to enable or excite neurological responses using an implantable neurostimulator having an electrode array. Dangerous levels of charge are avoided while providing multiple, simultaneous stimulation waveforms by inducing a short in an electrode when a monitored value reaches or exceeds a predetermined threshold.Type: GrantFiled: April 19, 2019Date of Patent: July 4, 2023Assignee: University of Louisville Research Foundation, Inc.Inventors: Susan J. Harkema, Yangsheng Chen, Claudia Angeli, Douglas J. Jackson, Manikandan Ravi, John Naber, Robert S. Keynton, Thomas Roussel, Saliya Kirigeeganage
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Publication number: 20220339450Abstract: Disclosed herein are devices and methods used with neurostimulation therapy for spinal cord injury. More particularly, embodiments of the present invention relate to a sync pulse detector and methods for synchronizing signals from an implanted neurostimulator with measured physiological responses and other data.Type: ApplicationFiled: February 11, 2022Publication date: October 27, 2022Applicant: UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC.Inventors: Susan J. Harkema, Yangsheng Chen, Douglas J. Jackson, Manikandan Ravi, Claudia Angeli
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Publication number: 20220193415Abstract: A closed loop system for control of spinal cord epidural stimulation includes a second controller hosting software for receiving, from at least one sensor, physiological data from a subject, generating a stimulation configuration based on the data, and transmitting the configuration to a first controller which operatively causes a neurostimulator to apply the stimulation configuration to the subject, the physiological results of such stimulation are monitored by the at least one sensor.Type: ApplicationFiled: April 4, 2020Publication date: June 23, 2022Applicant: UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC.Inventors: SUSAN J. HARKEMA, ENRICO REJC, CLAUDIA ANGELI, CHARLES H. HUBSCHER, APRIL N. HERRITY, YANGSHENG CHEN, SEVDA G. ASLAN
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Publication number: 20210228884Abstract: Patients with spinal cord injuries have benefited from neurostimulation therapy comprising delivery of electrical stimulation to enable or excite neurological responses using an implantable neurostimulator having an electrode array. Dangerous levels of charge are avoided while providing multiple, simultaneous stimulation waveforms by inducing a short in an electrode when a monitored value reaches or exceeds a predetermined threshold.Type: ApplicationFiled: April 19, 2019Publication date: July 29, 2021Inventors: Susan J. Harkema, Yangsheng Chen, Claudia Angeli, Douglas J. Jackson, Manikandan Ravi, John Naber, Robert S. Keynton, Thomas Roussel, Saliya Kirigeeganage
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Publication number: 20200346015Abstract: Methods for normalization of blood pressure for individuals with spinal cord injuries include providing such individuals with spinal cord electrical stimulation optimized for cardiovascular function. An electrode array provides specific stimulation configurations identified to maintain systolic blood pressure within targeted normative ranges without skeletal muscle activity.Type: ApplicationFiled: January 11, 2019Publication date: November 5, 2020Inventors: Susan J. Harkema, Claudia Angeli, Yangsheng Chen
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Publication number: 20200316378Abstract: The present invention relates to methods for improvement in lower urinary tract function in an individual with neurogenic urological dysfunction through epidural stimulation of the spinal cord. In certain embodiments, the methods comprise applying a pattern of epidural electrical stimulation to the spinal cord of an individual with impaired lower urinary tract under stimulation parameters sufficient to improve the storage of fluid in the bladder, sensations of fullness and/or emptying, detrusor over-activity, high detrusor pressure, voiding the bladder, transitioning from a storage state to a voiding state, and decreasing detrusor-external urethral sphincter dyssynergia. In certain embodiments, additional patterns of epidural electrical stimulation may be applied simultaneously, such as to maintain a normotensive cardiovascular state of the individual.Type: ApplicationFiled: April 4, 2020Publication date: October 8, 2020Applicant: University of Louisville Research Foundation, Inc.Inventors: Charles S. Hubscher, Susan J. Harkema, April N. Herrity, Yangsheng Chen, Claudia Angeli
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Patent number: 10737095Abstract: Neurostimulator devices are described. An example neurostimulator device includes a stimulation assembly connectable to a plurality of electrodes, wherein the plurality of electrodes are configured to stimulate a spinal cord. The neurostimulator device also includes an interface and at least one processor configured to modify at least one complex stimulation pattern deliverable by the plurality of electrodes by integrating data from the interface and performing a machine learning algorithm on the at least one complex stimulation pattern.Type: GrantFiled: March 29, 2018Date of Patent: August 11, 2020Assignee: Californina Institute of TechnologyInventors: Joel W. Burdick, Yu-Chong Tai, John F. Naber, Robert S. Keynton, Victor Reggie Edgerton, Roland R Roy, Yury Gerasimenko, Susan J. Harkema, Jonathan Hodes, Claudia A. Angeli, Mandheerej S. Nandra, Thomas Anthony Desautels, Steven L. Upchurch, Douglas J. Jackson, Nicholas A. Terrafranca, Jr., Yangsheng Chen
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Publication number: 20180229038Abstract: Neurostimulator devices are described. An example neurostimulator device includes a stimulation assembly connectable to a plurality of electrodes, wherein the plurality of electrodes are configured to stimulate a spinal cord. The neurostimulator device also includes an interface and at least one processor configured to modify at least one complex stimulation pattern deliverable by the plurality of electrodes by integrating data from the interface and performing a machine learning algorithm on the at least one complex stimulation pattern.Type: ApplicationFiled: March 29, 2018Publication date: August 16, 2018Inventors: Joel W. Burdick, Yu-Chong Tai, John F. Naber, Robert S. Keynton, Victor Reggie Edgerton, Roland R. Roy, Yury Gerasimenko, Susan J. Harkema, Jonathan Hodes, Claudia A. Angeli, Mandheerej S. Nandra, Thomas Anthony Desautels, Steven L. Upchurch, Douglas J. Jackson, Nicholas A. Terrafranca, JR., Yangsheng Chen
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Neurostimulator devices using a machine learning method implementing a gaussian process optimization
Patent number: 9931508Abstract: Neurostimulator devices are described comprising: a stimulation assembly connectable to a plurality of electrodes, wherein the plurality of electrodes are configured to stimulate a spinal cord; one or more sensors; and at least one processor configured to modify at least one complex stimulation pattern deliverable by the plurality of electrodes by integrating data from the one or more sensors and performing a machine learning method implementing a Gaussian Process Optimization on the at least one complex stimulation pattern. Methods of use are also described.Type: GrantFiled: June 30, 2016Date of Patent: April 3, 2018Assignees: CALIFORNIA INSTITUTE OF TECHNOLOGY, UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC., THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, NEURORECOVERY TECHNOLOGIES, INC.Inventors: Joel W. Burdick, Yu-Chong Tai, John F. Naber, Robert S. Keynton, Victor Reggie Edgerton, Roland R. Roy, Yury Gerasimenko, Susan J. Harkema, Jonathan Hodes, Claudia A Angeli, Mandheerej S. Nandra, Thomas Anthony Desautels, Steven L. Upchurch, Douglas J. Jackson, Nicholas A. Terrafranca, Yangsheng Chen -
Publication number: 20160310739Abstract: Neurostimulator devices and methods of using these devices are described. The neurostimulator devices can include a stimulation assembly connectable to a plurality of electrodes; one or more sensors; and at least one processor configured to modify at least one complex stimulation pattern.Type: ApplicationFiled: June 30, 2016Publication date: October 27, 2016Inventors: Joel W. Burdick, Yu-Chong Tai, John F. Naber, Robert S. Keynton, Victor Reggie Edgerton, Roland R. Roy, Yury Gerasimenko, Susan J. Harkema, Jonathan Hodes, Claudia A. Angeli, Mandheerej S. Nandra, Thomas Anthony Desautels, Steven L. Upchurch, Douglas J. Jackson, Nicholas A. Terrafranca, Yangsheng Chen
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Patent number: 8004220Abstract: A drive system for a motor having a rotor and a phase winding (a, b, c) comprises; a drive circuit including switch means associated with the winding a, b, c for varying the current passing through the winding; rotor position sensing means arranged to sense the position of the rotor; control means arranged to provide drive signals to control the switch means; a power input for connection to a power supply at a nominal voltage; and boost means in electric communication with the power input and power output, and controllable to boost the nominal voltage to a higher voltage for application to the winding.Type: GrantFiled: July 8, 2005Date of Patent: August 23, 2011Assignee: TRW LimitedInventors: Malcolm Eric Sparey, Adrian Szabo, Graham William White, Jeffrey Ronald Coles, Connel Brett Williams, Yangsheng Chen
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Publication number: 20080265808Abstract: A drive system for a motor having a rotor and a phase winding (a, b, c) comprises; a drive circuit including switch means associated with the winding a, b, c for varying the current passing through the winding; rotor position sensing means arranged to sense the position of the rotor; control means arranged to provide drive signals to control the switch means; a power input for connection to a power supply at a nominal voltage; and boost means in electric communication with the power input and power output, and controllable to boost the nominal voltage to a higher voltage for application to the winding.Type: ApplicationFiled: July 8, 2005Publication date: October 30, 2008Inventors: Malcolm Eric Sparey, Adrian Szabo, Graham William White, Jeffrey Ronald Coles, Connel Brett Williams, Yangsheng Chen